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Tianjin Huayin Construction Instrument Technology Co., Ltd

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Dry heat resistance test pot

NegotiableUpdate on 05/14
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Overview
The dry heat resistance test pot is mainly used to conduct dry heat resistance tests on the surfaces of artificial boards, decorative artificial boards, etc., to determine the resistance of the surface decorative layer to dry and hot objects.
Product Details
Dry heat resistance test pot
1、 Purpose:
The purpose of the dry heat resistance test pot is:
The dry heat resistance test pot is mainly used to conduct dry heat resistance tests on the surfaces of artificial boards, decorative artificial boards, etc., to determine the resistance of the surface decorative layer to dry and hot objects. Applicable to: GB/T15102, GB/T17657, GB/T18102 standards.
The purpose of the dry heat resistance test cup is:
This test cup is manufactured according to the technical requirements of the national standard GB4893.385. It can be used for the determination of paint films on furniture surfaces, as well as for the determination of dry heat resistance of polyester polyurethane wood coatings and UV cured wood coatings.
2、 Main technical parameters:
Main technical parameters of the dry heat resistance test pot:
1. Dry hot pot: outer diameter of φ 87 ± 1mm, height of 150 ± 5mm, bottom thickness of 2.5 ± 0.5mm
2. Compression ring: outer diameter of 180 ± 1mm, inner diameter of 120 ± 1mm, weight of approximately 4Kg
3. Block: Dimensions: 100mm × 100mm × 64mm (length × width × height) Weight: Approximately 5Kg
3、 Measurement steps:
Measurement steps for dry heat resistance test pot:
1. Place the specimen (dimensions: length: 230mm ± 5mm; width: 230 ± 5mm) in an environment with a temperature of (23 ± 2) ℃ and a relative humidity of (50 ± 5)% for 7 days.
2. Check the bottom of the test pot for surface damage and adhesion.
3. Place enough glycerol tristearate in a cylindrical container, with the liquid level 15mm above the top. Place the container on a heating source and raise the temperature to around 180 ℃. Insert a thermometer into the container, with the mercury ball bottom of the thermometer about 6mm from the bottom of the container. While stirring continuously, raise the oil temperature to 185 ℃, then move the container onto the insulation board and stir continuously to lower the temperature to (180 ± 1) ℃.
4. Immediately place the container on the surface of the specimen and let it sit for 20 minutes without stirring. Remove the container and let the specimen cool for 45 minutes.
5. Light is projected onto the specimen from various angles of incidence, and the surface of the specimen is observed with the naked eye for any changes such as bubbles, cracks, color changes, or obvious light fading.
Measurement steps for dry heat resistance test cup:
1. Check the bottom of the copper test cup for any surface damage or adhesion.
2. Inject 100 ± 1 grams of mineral oil.
3. Heat the copper test cup on the electric furnace until the oil temperature exceeds the specified temperature by 10 ℃ (safety must be ensured during the heating process), use crucible tongs to place the test cup on the diaphragm heat pad, let the oil temperature slightly decrease, and continuously stir the mineral oil to evenly distribute the oil temperature.
4. When the oil temperature in the copper test cup reaches the specified temperature, move the cup to the testing area and let it stand for 15 minutes.
5. After reaching the specified time, remove the test cup and lightly test the test area with filter paper to indicate the test temperature. Let it stand for 16-24 hours.
6. Lightly test the test area with filter paper and conduct the inspection as required.